Stock-Based Compensation - Summary of Employee and Nonemployee Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2016 |
Dec. 31, 2015 |
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| Options Outstanding, Number of Shares Outstanding | ||
| Outstanding, beginning balance (in shares) | 1,961,000 | |
| Canceled or expired (in shares) | (33,000) | |
| Outstanding, ending balance (in shares) | 1,928,000 | 1,961,000 |
| Exercisable | 1,081,000 | |
| Options Outstanding, Weighted-Average Exercise Price | ||
| Outstanding, beginning balance (in dollars per share) | $ 10.55 | |
| Cancelled or expired (in dollars per share) | 9.91 | |
| Outstanding, ending balance (in dollars per share) | 10.56 | $ 10.55 |
| Exercisable (in dollars per share) | $ 10.34 | |
| Weighted-Average Remaining Contractual Term (in years) | ||
| Outstanding | 7 years 4 months 17 days | 7 years 8 months 5 days |
| Exercisable | 6 years 6 months 7 days | |
| Aggregate Intrinsic Value | ||
| Outstanding, beginning balance | $ 0 | |
| Outstanding, ending balance | 0 | $ 0 |
| Exercisable | $ 0 |
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Intrinsic Value [Abstract] No definition available.
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- References No definition available.
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average price of options that were either forfeited or expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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